Improvement in plows



R. A. GRAHAM.

Plow.

No 10.069. Patentd Oct. 4, 1853.

UNITED STATES PATENT OFFICE.

ROBERT A. GRAHAM, OF NEW PARIS, OHIO.

lM PROVEM ENT IN PLOWS.

Specification forming part of Letters Patent No. 10,069, dated October 4, 1853.

To all whom "it may concern:

Be it known that I, RoBER'r A. GRAHAM, of New Paris, in the county of Preble and State of Ohio, have invented new and useful Improvements in Flows; and Ido hereby declare the following to be a full, clear, and exact description thereof, reference being bad to the annexed drawings, making part of this specification.

Myimprovements have for their object, first, the lateral angular adjustment of the moldboard, so as to increase or diminish its flare to suit different kinds of ground, a sharp presentation of the mold-board being desirable for sod or subsoil plowing and a flaring one for trash or stubble; secondly, the lateral angular adjustmentof the beam to suit the flare of the mold-board, the number and arrangement of animals in the team, and the nature of the ground, a flaring board, an additional horse, or the presence of rank vegetation or stubble, for instance,all making it requisite to place the beam out of land, and vice versa, in order either to counteract the swervin g tendencies of the mold-board or team, or, in the case of stubble, to avoid clogging the throat of the plow; thirdly, the preservation of the continuity of the plowing-surfaces during the variations in the flare of the mold-board.

In the annexed drawings, Figure l is a perspective view of the plow. Fig.2 is adetached view of the joint between the beam and the sheth. Fig. 3 is a detached view of the share audits appendages, seen from below.

In the accompanying drawings, a is the landside-bar, and b the share, welded together in one piece. To these the sheth c and moldboard 01 are united by two bolts e f, which, passing through the mold-board, sheth, and share, are secured below the latter by nuts cf. The aperture 9 in the share occupied by the bolt f is an oblong one, concentric with the bolt 0, so as (when the nuts are relaxed) to permit a vibration of the mold-board and sheth with respect to the share and landside.

his the colter. t is thelandside-plate, sharpened at its front edge, so as to occupy and be held fast by a groove or nick, j, in the sheth,

and so as to preserve the continuity of the landside surface with every position of the mold-board.

The rear end of the landside-plate is made fast to the foot of the helve 75 by means of the bolt 1, which also attaches to the helve the shank m-of thelandside bar and the lower end of the stay-bolt a. This stay-bolt a, passing upward through a transverse slot, 0, in the top of the shot and through the beam 2, is bolted fast upon the upper side of the latter, a pin or dowel, 9, upon the under side of the beam being previously inserted in one or the other of the sockets p p, according to the angular position desired for the beam. The tail of the beam is not iinmovably fixed to the helve, but terminates in a dovetailed tenon, q, occupying a corresponding socket, 0', upon the helve, and is consequently capable of lateral adjustment, so as to still further facilitate the angular transposition of the beam. Thebeam being (by means of the shifting attachments to the sheth and helve) brought to the desired direction, is retained thereto by the ti ghtening of the screw 8 and nut t.

The flare of the mold-board is increased or diminished by means of thescrew-bolt u, having its head a held fast, but permitted to rotate in the helve by a pin, 12, and being tapped into a nut, 20, fastened to the lower end of the second handle by means of the same bolts, 00, which attach the rear corner of the moldboard.

The upper edge of the share constitutes a lip, y, which, having at its upper side a horizontal chamt'er nicely fitted to the lower edge of the mold-board, affords a continuous surface when the angle of the plow is contracted.

VVha-t I claim herein as new, and desire to secure by Letters Patent, is-

1. The screw-bolt a, or its equivalent, for setting out or in the rear edge of the moldboard with respect to the landside, acting in combination with the bolts 0 and j, which, being tightened, attach to each other the moldboard, sheth, and lipped or flanged share, as described, and which bolts, being temporarily relaxed, permit the vibration of the mold-board about the bolt 6 without interrupting the conrequirement of a change in the flare of the tinuity of plowing-surface or disconnecting mold-board, and other objects, as herein exthe several parts.

2. The shifting or adjustable socket attachment of the beam to the sheth, in combination with the dovetailed and adjustable conneotion of the rear end of the beam to the helve, or equivalent devices, so as to vary the direction of the draft of the plow to suit the plained.

In testimony whereof I have hereunto set my hand before two subscribing witnesses.

R. A. GRAHAM. Witnesses:

EDWARD H. KNIGHT, J A0013 REINHEIMER. 

